Part C A small block on a frictionless horizontal surface has a mass of What is the new angular speed? 0.0280 kg. It is attached to a massless cord passing through a hole in the surface. (See the figure below (Figure 1).) The block is Express your answer in radians per second. originally revolving at a distance of 0.350 m from the hole with an angular speed of 1.85 rad/s. The cord is then pulled from below, shortening the radius of the circle in which the block revolves to AEQ ? 0.200 m. You may treat the block as a particle. W = rad/s Submit Request Answer Part D Find the change in kinetic energy of the block. Express your answer in joules. Figure 1 of 1 AEd ? AK = Submit Request Answer Part E How much work was done in pulling the cord? Express your answer in joules. AED